Resolve CONSTANT in instance_eval & Import CONSTANT from Module / Class

global_constant.rb

module GlobalConstant
  AUTORESOLVE = []
  AUTOIMPORT = []

  def self.install
    Object.instance_eval do
      class << self
        alias old_const_missing const_missing
        def const_missing constant
          to_check = GlobalConstant::AUTORESOLVE.keep_if { |m| m.singleton_class == self } + GlobalConstant::AUTOIMPORT
          to_check.each do |m|
            return m.const_get constant if m.const_defined? constant
          end
          old_const_missing constant
        end
      end
    end
  end
end

output

> irb -r ./global_constant.rb -r ./test.rb 
####### BEFORE ##########
>> Test::ITMORE
=> "good"
>> Test.run { ITMORE }
NameError: uninitialized constant Module::ITMORE
######## INSTALL ##############
>> GlobalConstant.install
>> GlobalConstant::AUTORESOLVE << Test
=> [Test]
>> Test.run { ITMORE }
=> "good"
>> GlobalConstant::AUTOIMPORT << Test
=> [Test]
>> ITMORE
=> "good"

test.rb

module Test
  ITMORE = "good"
  
  def self.run &block
    instance_eval &block if block_given?
  end
end